Not all Alfa products are OOB compatible, you definitely need to be careful. I have the AWUS036AC which requires compiling a DKMS module.
It was a pain the get working on my Raspberry Pi, I had to try several different drivers and edit a Makefile to get it to compile. But I did eventually get it working as an AP, there's a script called create_ap which is very nice to painlessly run an AP on Linux.
It was a pain the get working on my Raspberry Pi, I had to try several different drivers and edit a Makefile to get it to compile. But I did eventually get it working as an AP, there's a script called create_ap which is very nice to painlessly run an AP on Linux.